fixing playwright runner release

[mayank-at-sauce]

Description

What's New / Changed

1. macOS 14 & 15 (ARM) Support

The core goal of this PR is to add macOS 14 and macOS 15 support for the Sauce Labs Playwright runner. Since macOS 14+ VMs on Sauce Labs are ARM-based (Apple Silicon), the new
config field armRequired: true is set on all macOS 14/15 suites.

2. Overhauled Browser Bundling (scripts/bundle.macos.sh)

This is the biggest change (+48/-4). The old script did a single playwright install with a mac13 override. The new script uses a multi-step architecture-aware bundling process:

1. ARM64 install — Installs Chromium, chromium-headless-shell, and WebKit using mac14-arm64 override (forward-compatible with macOS 15, but not vice versa). Firefox is excluded
   because both architectures share the same directory path.

2. Backup ARM64 Chromium — Saves chrome-mac-arm64 and chrome-headless-shell-mac-arm64 directories to a temp folder before x64 install overwrites them.

3. Remove INSTALLATION_COMPLETE markers — Forces Playwright to re-download x64 variants instead of silently skipping.

4. x64 install — Installs Chromium, chromium-headless-shell, and Firefox using mac13 override for Intel Macs (macOS 12/13).

5. Restore ARM64 Chromium — Copies the backed-up arm64 directories back so both architectures coexist in the bundle.

6. CI Runner Change (release.yml, test.yml)

• Build runner changed from macos-15-intel → macos-15 (ARM GitHub runner) for both the test and release workflows.

4. saucectl Version Pinned to v0.201.0

• All saucectl steps (3 in test.yml, 4 in release.yml) now pin saucectl-version: v0.201.0, which is required to support the armRequired config field.

5. Test Matrix Expanded (test.yml)

• Both cloud test matrices expanded from [Win10, Win11, macOS12, macOS13] → [Win10, Win11, macOS12, macOS13, macOS14, macOS15].
• WebKit excluded on macOS 13 (and already on macOS 12) — WebKit dropped mac13 support in Playwright 1.58.1.

6. Test Fixture Configs Updated

• config.yml / config-sc.yml — Added 6 new suites (macOS 14 + macOS 15, each with Chromium/Firefox/Webkit), all with armRequired: true.
• config_mac.yml (post-release) — WebKit suite moved from macOS 13 → macOS 14 with armRequired: true. Added 3 new macOS 15 suites (Chromium/Firefox/Webkit) with armRequired: true.

7. Housekeeping

• .gitignore — Added .idea/ (JetBrains IDE config).